| 灰铸铁等离子束合金化的耐磨性和耐蚀性研究 |
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| 引用本文： | 程秀,胡树兵,宋武林,韩志磊.灰铸铁等离子束合金化的耐磨性和耐蚀性研究[J].热处理,2013(6):10-15. |
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| 作者姓名： | 程秀 胡树兵 宋武林 韩志磊 |
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| 作者单位： | 华中科技大学材料成形与模具技术国家重点实验室,湖北武汉430074 |
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| 基金项目： | 基金项目：2010年省部产学研合作重大项目（2010090200047）资助 |
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| 摘 要： | 利用等离子柬对灰铸铁进行表面合金化强化处理。采用扫描电镜、X射线衍射、硬度试验和磨损试验等分析了经合金化处理灰铸铁的组织和性能。结果表明，经合金化处理的灰铸铁表面石墨相完全消失，合金化层的显微组织主要是枝晶结构，硬度最高值出现在次表层，平均硬度高达1092HV0．1。由于合金化层组织均匀细密，合金化层的耐磨性比基体高4倍，耐蚀性比基体高72．5％。
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| 关 键 词： | 灰铸铁 等离子束 显微组织 耐蚀性 耐磨性 |
Wear and Corrosion Resistances of Gray Iron Alloyed by Plasma Beam |
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| CHENG Xiu,HU Shubing,SONG Wulin,HAN Zhilei.Wear and Corrosion Resistances of Gray Iron Alloyed by Plasma Beam[J].Heat Treatment,2013(6):10-15. |
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| Authors: | CHENG Xiu HU Shubing SONG Wulin HAN Zhilei |
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| Affiliation: | (State Key Laboratory of Material Processing and Die and Mould Technology, Huazhong University of Science and Technology, Wuhan 430074, Hubei China) |
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| Abstract: | The gray iron was case alloyed thereby strengthened by using a plasma beam technology, and subsequently was subjected to mierostructural SEM survey, XRD, hardness measurements and wear tests. The results show that the case of gray iron is completely free of graphite phase, and offers mainly dendrite structure. Furthermore, the highest hardness appears in the subsurface, and the mean case hardness is as high as 1092 HV0.1. Since the case offers uniform and fine structure, the wear resistance increases four times, and the corrosion resistance raises by 72.5% relative to the matrix. |
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| Keywords: | gray iron plasma beam microstructure corrosion resistance wear resistance |
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